Firearm.



B. BEER. FIREARM. I APPLICATION FILED AUG. 4, 1906.

926,456; Patented June 29, 1909.

. Inventor TEN n.

BIJRKARD BEHR, OF SUHL, GERMANY.

FIREARM.

Specification of Letters Patent.

Patented June 29, 1909.

Application filed August 4, 1906. Serial No. 329,207.

To all whom it may concern:

Be it known that I, BURKARD BEHR, a citizen of the German Empire,residing at Suhl, in Thuringia, in the Kingdom of Wurtem. berg, Empireof Germany, have invented cer tain new and useful Improvements inFirearms, of which the following is a description, reference being hadto the accompanying drawing and to the letters of reference markedthereon.

This invention relates to a means for locking the barrel in firearms ofall kinds. The barrel fastening devices hitherto employed have moreparticularly the drawback that they are not adapted for use with guns oflarge bore, as the closing at the breech block is not gas-tight, thelatter being either curved concentrically to the axis of rotation orhaving to be made at an inclination to the axis of the bore in order toallow of the barrel or barrels being turned up. v

Now according to the present invention the barrels may be turned up insuch a way that a rectangular breech plate or block may be provided anda thoroughly gas-tight closing of the cartridge chamber to the rear isobtained. Where trunnions are used as pivots for the barrels, thispivoting is attained by the entire system together with the trunnionsbeing adapted to turn on an axis which does not coincide with the axisof rotation of the barrels but lies at the most at the level of thelowest point of the barrel or barrels. If hinge pins be employed aspivots for the barrels, the barrels may either be turned up in a mannersimilar to that in the case of the arrangement of trunnions, on aseparate axis, or even directly on the hinge pin itself.

A further improvement of the fastening mechanism according to thepresent invention consists in that where hinge pins are used, the weightof the weapon is diminished, which is an effect universally soughtafter. In other known barrel fastemng mechanisms the arrangement of thetrunnions mounted in the walls of the chamber and also the slide lugs ofthe barrel with their recesses lying also in the chamber wallsnecessitate considerably longer and thicker chamber walls which involvesa considerably greater weight of the weapon provided with such afastening mechanism. These drawbacks are the more troublesome in thecase of double barreled and multi-barreled guns, as the barrels up tothe trunnions lie in the pins, the long chamber inclosing the chamber.Now if in order to diminish the weight as far as possible, the barrelsbe pivotally arranged on the well-known hinge barrel is dispensed with,while for fastening, side cheeks provided on the basquill bolts, whichhave recesses for the slide lugs of the barrels, suffice. Further, by.arranging trunnions on the barrels and also by making specially broadfront shafts, the costs of manufacture are very considerably increased,against which the improved fastening device according to the presentinvention may be made much simpler.

The object of this invention is shown in the accompanying drawings inseveral forms of construction Figure 1 is a side view of a form ofconstruction of a single barreled gun with trunnions and projectionsundercut eccentrically to the latter. Fig.2 a side view of another formof construction of a double barreled gun with a hinge pin as a pivotwith projections undercut concentrically; and Fig. 3, a similar view ofa three-barreled gun with projections undercut eccentrically to thehinge pin; Fig. 4 is a view of the gun shown in Fig. 3, seen from above.

The barrels a, are pivotally mounted in the ordinary way in a chamber I)and provided with lateral undercut projections c behind which in theclosed position, suitable projections d. of the chamber 1) engage.

The form of construction shown in Fig. 1 relates to. a single barreledgun which is provided with trunnions e acting as a pivot. Now accordingto the projections c are undercut eccentrically to the pins 6 while thebreech plate f may be formed flat and rectangular. In consequence of theundercutting of the projections 0 being eccentric to the trunnions e,these may no longer be pivotal in a fixed position, but must be able toyield to follow the eccentrical movement. This is attained by thetrunnions e being mounted in suitably shaped slots 9 formed in the sidesof the chamber 1),

so that, on the barrel a being turned up, they may move forward. Whenthe gun is closed the trunnions e are completely relieved as the entirepressure is carried by the projections 0.

Figs. 2, 3 and 4 show forms of construction of double or multi-b arrelguns, in which hinge pins h are employed as axes of rotation. Instead ofthe long chambers b hitherto necessary, only small checks '5 of suitableform are the present invention here here provided, while the projectionsc in Fig. 2 are shaped concentrically to the hinge pins, but in Figs. 3and 4 they are cut eccentrically to them, and the hinge pins f, as thetrunnions e of the form of construction shown in Fig. 1, lie in suitablyshaped slots is formed in the chamber 6.

Having now particularly described and ascertained the nature of my saidinvention and in what manner the same is to be performed, I declare thatWhat I claim is 1. In a firearm, in combination, a barrel pivoted on ahinge pin located below the longitudinal axis of the barrel and providedwith side projections at its rear end, a breech chamber havingsubstantially long arms in which said hinge pin is journaled and shorterarms provided with projections which cooperate with the projections onsaid barrel, substantially as described.

2. In a firearm, in combination, a barrel, a hinge pin therefor, sideprojections at the rear end of the barrel, and a breech chamber havingshort arms provided With projections which cooperate with theprojections on the barrel, substantially as described.

In testimony whereof I aflix my signature, in presence of two Witnesses.

BURKARD BEHR.

Witnesses:

WALTER SCHWAEBSCH, RUDoLF BRECHT.

